Celebs call for social media users to not share journalist beheading video

SHUN: Celebrities have urged social media users to not share the video of James Foley being beheaded [AP]

As users on Twitter and Facebook search for videos and pics of the shocking execution, celebrities including actress Mia Farrow and former MP Louise Mensch have urged their followers to shun the footage.

They claim that spreading the video would only give oxygen to the Islamic State (IS), and thousands of users posted under the hashtag #ISISmediablackoutto to get the message trending.

Farrow tweeted: "Blackout on group that murdered James Foley. Don't share video. Give them nothing. #RespectJamesFoley."

Blackout on group that murdered James Foley. Don't share video. Give them nothing. #RespectJamesFoley